Headbands protect your forehead, ears, and nape of the neck from cold weather protect your forehead, ears, and nape of the neck from cold weather. It also allows you to tie your hair, preventing the annoying knots that form into it due to the use of other layers in your clothing, such as jackets and scarves.
The Pastel headband gives a touch of light colors to your clothing. You can combine with similar colors, but also with dark ones. Try making a high tail in your hair, wear your pastel headband, and you are going to look fantastic.